Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	5958	882	15%	0.01	1155	590	51%	6.6
10 Kinds of People	10526	2224	21%	0.01	1849	1257	68%	5.2
2048	5992	2844	47%	0.00	2726	2326	85%	2.5
3D Printed Statues	5921	2765	47%	0.00	2626	2352	90%	2.1
3D Printer	502	107	21%	0.00	189	85	45%	8.0
3-Sided Dice	1903	169	9%	0.00	308	115	37%	8.6
4 thought	5957	2010	34%	0.00	2001	1666	83%	3.1
A1 Paper	3889	1157	30%	0.00	1132	891	79%	3.8
Aaah!	20570	9699	47%	0.00	8715	8102	93%	1.6
Abandoned Animal	1239	244	20%	0.03	296	211	71%	5.2
ABC	8263	3806	46%	0.00	3629	3306	91%	1.6
Above Average	4787	1999	42%	0.00	1999	1789	89%	2.0
A+B Problem	5804	598	10%	0.03	832	285	34%	8.1
A Brief Gerrymander	173	37	21%	0.15	37	22	59%	8.2
Abstract Art	224	62	28%	0.00	61	45	74%	6.8
Absurdistan Roads II	499	180	36%	0.00	175	119	68%	6.8
Absurdistan Roads III	1259	341	27%	0.02	327	247	76%	5.6
Access Points	207	90	43%	0.01	76	59	78%	5.9
A Classy Problem	7165	1854	26%	0.01	1587	1224	77%	4.5
ACM Contest Scoring	5091	3208	63%	0.00	2823	2667	94%	1.6
Adding Words	7408	1713	23%	0.00	1707	1295	76%	4.4
A Different List Game	5648	388	7%	0.00	696	138	20%	9.1
A Different Problem	21987	8463	38%	0.00	7838	6796	87%	2.1
Adjoin the Networks	1441	387	27%	0.00	339	264	78%	5.7
Administrative Difficulties	815	194	24%	0.03	217	142	65%	6.6
Advanced Causal Measurements	49	12	24%	0.10	15	12	80%	6.7
Adventure Begins	169	54	32%	0.06	62	46	74%	4.3
Adventures in Moving -- Part IV	749	231	31%	0.00	206	180	87%	4.2
A Favourable Ending	1262	325	26%	0.00	301	222	74%	4.7
A Feast For Cats	1653	561	34%	0.00	377	313	83%	4.5
Air Conditioned Minions	3274	932	28%	0.00	998	751	75%	3.6
Airline Hub	1546	276	18%	0.01	310	170	55%	7.0
Airport Coffee	711	153	22%	0.09	148	111	75%	6.6
Airport Construction	2822	378	13%	0.02	306	161	53%	7.4
Airport Logistics	48	11	23%	0.00	17	11	65%	7.6
Airports	295	90	31%	0.11	86	65	76%	6.2
Akcija	5001	2192	44%	0.00	1958	1731	88%	2.0
Aladin	733	68	9%	0.10	113	21	19%	9.0
Alchemy	95	15	16%	0.03	27	15	56%	8.0
Alea iacta est	29	11	38%	0.34	14	11	79%	6.9
Alice in the Digital World	2130	591	28%	0.01	592	463	78%	4.1
Alien Codebreaking	54	6	11%	3.23	16	4	25%	8.8
Alien Numbers	1766	909	51%	0.00	882	801	91%	2.0
A List Game	6136	1835	30%	0.00	1764	1482	84%	2.9
All about that base	2488	978	39%	0.00	943	790	84%	3.1
All Different Directions	913	396	43%	0.00	363	315	87%	2.7
Allergy Test	341	108	32%	0.00	110	58	53%	7.9
All Friends	785	152	19%	0.00	138	71	51%	8.5
All Just A Dream	1549	362	23%	0.05	244	172	70%	6.6
All Pairs Shortest Path	6887	1222	18%	0.02	823	568	69%	6.0
Almost Perfect	5207	1217	23%	0.00	1292	1019	79%	3.4
Almost Union-Find	5189	912	18%	0.02	810	458	57%	6.8
Alphabet	956	471	49%	0.00	479	404	84%	3.1
Alphabet Spam	5557	3581	64%	0.00	2802	2698	96%	1.4
Alternative Bracket Notation	193	81	42%	0.00	85	71	84%	4.9
Altruistic Amphibians	318	75	24%	0.24	77	54	70%	5.1
Amalgamated Artichokes	3286	1485	45%	0.01	1331	1159	87%	2.7
Amanda Lounges	1244	343	28%	0.03	313	245	78%	5.5
A Mazing!	1679	401	24%	0.09	189	141	75%	5.1
Amazing Adventures	149	39	26%	0.03	46	29	63%	7.0
Amazing Race	259	68	26%	0.39	76	55	72%	6.6
Ambiguous Result	204	48	24%	0.03	72	46	64%	7.8
Amsterdam Distance	982	406	41%	0.00	455	368	81%	2.8
A Multiplication Game	467	138	30%	0.00	158	119	75%	4.3
Anagram Counting	2680	1035	39%	0.00	982	816	83%	3.1
Andrew the Ant	220	59	27%	0.06	74	55	74%	5.4
A New Alphabet	8577	3903	46%	0.00	3649	3382	93%	1.7
An I for an Eye	247	67	27%	0.00	77	57	74%	5.4
Animal Classification	1372	295	22%	0.03	276	178	64%	6.6
An Industrial Spy	1307	676	52%	0.02	529	452	85%	3.2
Another Brick in the Wall	2294	1096	48%	0.00	1063	968	91%	1.9
Another Candies	6232	1654	27%	0.00	1751	1425	81%	3.2
Another Dice Game	83	60	72%	0.00	53	49	92%	3.4
Another Query on Array Problem	1149	150	13%	0.05	256	106	41%	7.8
Antenna Placement	28	17	61%	0.00	8	7	88%	6.2
Anthony and Cora	663	172	26%	0.00	209	143	68%	5.5
Anthony and Diablo	1779	629	35%	0.00	691	596	86%	2.4
Antiarithmetic?	1008	183	18%	0.01	245	133	54%	7.4
Ants	2685	1215	45%	0.00	939	834	89%	2.4
Apaxiaaaaaaaaaaaans!	9232	5614	61%	0.00	5097	4876	96%	1.4
Apostrophe Catastrophe	61	15	25%	0.00	14	9	64%	6.5
Appalling Architecture	168	54	32%	0.00	61	52	85%	4.8
Apparatus	638	162	25%	0.01	124	95	77%	5.1
Apple Market	445	89	20%	0.07	104	55	53%	7.7
Apples, Cherries, and Mangos	364	114	31%	0.02	107	82	77%	5.6
A Prize No One Can Win	540	236	44%	0.00	198	174	88%	2.5
Aquarium Tank	438	119	27%	0.00	113	88	78%	5.4
Aqueduct Construction	143	51	36%	0.01	42	36	86%	6.1
A Question of Ingestion	1093	266	24%	0.00	246	185	75%	5.7
Arable Area	233	54	23%	0.04	56	34	61%	8.1
Arachnophobia	245	74	30%	0.14	69	56	81%	4.9
A Random Problem	127	25	20%	0.00	31	20	65%	8.0
A Rational Sequence	1332	445	33%	0.00	479	346	72%	5.0
A Rational Sequence 2	1705	1258	74%	0.00	1110	1066	96%	1.5
A Rational Sequence (Take 3)	659	561	85%	0.00	435	425	98%	1.7
Arbitrage?	1742	355	20%	0.02	261	211	81%	3.6
Arcade!	1122	202	18%	0.01	195	138	71%	6.3
Arctic Network	1285	449	35%	0.00	391	313	80%	4.3
A Real Challenge	6102	2948	48%	0.00	2841	2664	94%	1.6
Area of Effect	153	10	7%	1.93	22	8	36%	8.5